Wet food wins on hydration, palatability, and protein-per-can; dry wins on cost-per-calorie, convenience, and dental friction. Complete diets exist in both — the choice is logistics and the dog.
| Item | Detail |
|---|---|
| Moisture | Wet: 70–80% | Dry: ~10% |
| Cost per calorie | Wet: 2–4× dry |
| Protein density | Wet often higher animal protein share |
| Dental effect | Wet: none | Dry: marginal plaque friction |
| Best fits | Wet: kidney/urinary, seniors, picky eaters | Dry: budget, multi-dog homes |
The hydration argument
Dogs on dry-only diets chronically run mild dehydration, which matters for kidney and urinary health — the veterinary use case for wet food is genuine. Mixing (our mixing FAQ) captures the hydration benefit at partial cost.
The economics
A 40 lb dog eats $1.20–2.00/day in dry versus $4–8 fully wet. The middle path — wet as topper — runs $1–2 extra. Dental claims for dry kibble are weak (our dental chew file covers what actually works). For formula-level choices see the review library.
FAQ
Is wet food healthier than dry?
For hydration-dependent conditions, yes. Nutritionally both can be complete — health difference is context-specific, not categorical.
Can I feed only wet food?
Yes, if budget allows and teeth are managed separately. Many senior and urinary patients do exactly that.
Related reading: Mixing FAQ · Dental chews · Review library · All FAQs